gnome-shell-theme-yosemite-dark - Mac OSX Yosemite like theme. This theme is alter some options and styles for gnome-shell users.

yosemite-light-gtk-theme - Mac OSX like gtk theme

imsettings - fix return exit code

brackets - new update 1.12 (testing)

important

gnome-shell-theme-match-dark

gnome-shell-theme-yosemite-dark

This two gnome-shell themes in alter GDM login backgraound and recreate gnome-shell-theme.gresource for fedora users.
The background image name is gdm_wallpaper.jpg and location is /usr/share/backgrounds